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73 lines
1.5 KiB
73 lines
1.5 KiB
#pragma once
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#include <errno.h>
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#include <unistd.h>
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#include <string.h>
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#include "panic.h"
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#include "debuglog.h"
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#include "http_response.h"
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#include "http_total.h"
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#include "runtime.h"
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#include "worker_thread.h"
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static inline void
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client_socket_close(int client_socket)
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{
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/* Should never close 0, 1, or 2 */
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assert(client_socket != STDIN_FILENO);
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assert(client_socket != STDOUT_FILENO);
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assert(client_socket != STDERR_FILENO);
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if (unlikely(close(client_socket) < 0)) debuglog("Error closing client socket - %s", strerror(errno));
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}
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/**
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* Rejects request due to admission control or error
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* @param client_socket - the client we are rejecting
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* @param status_code - either 503 or 400
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*/
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static inline int
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client_socket_send(int client_socket, int status_code)
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{
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const char *response;
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int rc;
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switch (status_code) {
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case 503:
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response = HTTP_RESPONSE_503_SERVICE_UNAVAILABLE;
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http_total_increment_5XX();
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break;
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case 400:
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response = HTTP_RESPONSE_400_BAD_REQUEST;
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http_total_increment_4XX();
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break;
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default:
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panic("%d is not a valid status code\n", status_code);
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}
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int sent = 0;
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int to_send = strlen(response);
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while (sent < to_send) {
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rc = write(client_socket, &response[sent], to_send - sent);
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if (rc < 0) {
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if (errno == EAGAIN) { debuglog("Unexpectedly blocking on write of %s\n", response); }
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debuglog("Error with %s\n", strerror(errno));
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goto send_err;
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}
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sent += rc;
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};
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rc = 0;
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done:
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return rc;
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send_err:
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debuglog("Error sending to client: %s", strerror(errno));
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rc = -1;
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goto done;
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}
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